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    PNEUMATIC RADIAL TIRE FOR MOTORCYCLE
    1.
    发明公开
    PNEUMATIC RADIAL TIRE FOR MOTORCYCLE 有权
    RADIALLUFTREIFENFÜRMOTORRAD

    公开(公告)号：EP1884377A4

    公开(公告)日：2009-01-07

    申请号：EP06730983

    申请日：2006-04-03

    申请人： BRIDGESTONE CORP

    发明人： NAKAGAWA HIDEMITSU

    IPC分类号： B60C11/04 ,  B60C5/00 ,  B60C11/117

    CPC分类号： B60C11/0311 ,  B60C11/0302 ,  B60C2011/0374 ,  B60C2200/10

    摘要： A pneumatic radial tire for a motorcycle enabling the safe running of the motorcycle according to various road surface conditions by making compatible wet performance, in particular, hydroplaning performance and traction performance with linearity of handling at a high level. Tilted lug grooves are (a) disposed at a tilt angle of 5 to 85° relative to a tire circumferential direction, and (b) the ratio of the minimum length Lmin thereof to the surface length W thereof along one side of a tread is 0.1 or higher. The two tilted lug groove groups are (c) formed of two or more tilted lug grooves disposed approximately parallel with each other, (d) formed of a first tilted lug groove group (G1) formed in a chevron shape laterally on the surface of the tread and a second tilted lug groove group (G2) formed in a reverse chevron shape. (e) The groups (G1) and the groups (G2) are alternately disposed in the circumferential direction. (f) The groups (G1) and the groups (G2) are alternately disposed on both sides of the equator of the tire symmetric with respect to the equator of the tire and with an offset in the circumferential direction.

    摘要翻译： 本发明提供一种用于摩托车的充气子午线轮胎，其通过兼顾湿路性能，特别是水平滑行性能和牵引性能以及高水平的操纵线性来根据各种路面条件安全地行驶摩托车。 倾斜横向花纹槽（a）相对于轮胎周向以5°至85°的倾斜角布置，并且（b）其沿着胎面的一侧的其最小长度Lmin与其表面长度W的比率为0.1 或更高。 （c）由大致平行配置的两个以上的倾斜横向花纹槽构成，（d）由第一倾斜横向花纹槽组（G1）和第二倾斜横向花纹槽构成，该第一倾斜横向花纹槽组（G1） 胎面和形成为倒V形形状的第二倾斜横向花纹槽组（G2）。 （e）组（G1）和组（G2）沿圆周方向交替设置。 （f）组（G1）和组（G2）相对于轮胎的赤道对称地交替地设置在轮胎的赤道的两侧，并且在圆周方向上具有偏移。

    PNEUMATIC RADIAL TIRE FOR MOTORCYCLE
    2.
    发明公开
    PNEUMATIC RADIAL TIRE FOR MOTORCYCLE 有权
    子午线轮胎摩托车

    公开(公告)号：EP1864828A4

    公开(公告)日：2009-05-13

    申请号：EP06713908

    申请日：2006-02-16

    申请人： BRIDGESTONE CORP

    发明人： NAKAGAWA HIDEMITSU

    IPC分类号： B60C9/18 ,  B60C9/08 ,  B60C9/20 ,  B60C9/22 ,  B60C13/00 ,  B60C15/06

    CPC分类号： B60C9/09 ,  B60C5/142 ,  B60C9/0207 ,  B60C9/2204 ,  B60C11/0058 ,  B60C15/0036 ,  B60C2009/2271 ,  B60C2200/10 ,  Y10T152/10765 ,  Y10T152/10792 ,  Y10T152/10864

    摘要： A pneumatic radial tire for a motorcycle capable of increasing stability in turning by making compatible grounding performance with lateral rigidity at a high level. A mono-spiral belt (MSB) (3) comprises steel cords of 5.9 Pa or higher in tensile rupture strength. The value Tc of the driven number of cords in the MSB (for each 25 mm in width) at the equator of the tire and the value Ts thereof at the shoulder parts thereof meet the requirements of 17 = Tc = 24 and 0.6 = Ts/Tc = 0.9. The disposed width BW of the cords in the MSB meets the requirement of 0.6 = BW/TW = 1.0. At least one textile reinforced layer having a tensile rupture strength of 5.9 Pa or higher is disposed at both ends of the MSB overlappingly with the MSB. The overlapped amount of the MSB with the textile reinforced layer is 4 to 10 times the diameter D of the steel cords in the MSB.

    PNEUMATIC MOTORCYCLE TIRE
    3.
    发明公开
    PNEUMATIC MOTORCYCLE TIRE 有权
    摩托车轮胎

    公开(公告)号：EP2815896A4

    公开(公告)日：2015-11-25

    申请号：EP13748565

    申请日：2013-02-06

    申请人： BRIDGESTONE CORP

    发明人： NAKAGAWA HIDEMITSU

    IPC分类号： B60C11/03 ,  B60C11/04 ,  B60C11/117

    CPC分类号： B60C11/0302 ,  B60C11/0304 ,  B60C11/032 ,  B60C11/12 ,  B60C2011/0376 ,  B60C2011/0381 ,  B60C2200/10

    摘要： Provided is a pneumatic motorcycle tire in which, without compromising the stability during running, other performances such as light-weight are improved. Provided is a pneumatic motorcycle tire which comprises a tread portion 1, and side wall portions 2 and bead portions 3 extending from both sides of the tread portion, and whose rotation direction when the tire is mounted on a vehicle is designated. A tire tread is provided with a bent main groove composed of: a first groove 11 extending toward the designated tire rotation direction inclined outside in the tread width direction in a contact region during straight running; a second groove 12 extending from the end portion of the first groove in the reverse rotation direction of the designated tire rotation direction toward the reverse rotation direction of the designated tire rotation direction inclined outside in the tire width direction; and a third groove 13 extending from the end portion of the second groove in the reverse rotation direction of the designated tire rotation direction toward the reverse rotation direction of the designated tire rotation direction inclined outside in the tire width direction, and the bent main groove is formed such that an inclination angle ¸ 3 with respect to the tire circumferential direction of the third groove is larger than an inclination angle ¸ 2 with respect to the tire circumferential direction of the second groove.

    PNEUMATIC MOTORCYCLE TIRE
    5.
    发明公开
    PNEUMATIC MOTORCYCLE TIRE 审中-公开

    公开(公告)号：EP2815897A4

    公开(公告)日：2015-11-25

    申请号：EP13749219

    申请日：2013-02-06

    申请人： BRIDGESTONE CORP

    发明人： NAKAGAWA HIDEMITSU

    IPC分类号： B60C11/03 ,  B60C11/04

    CPC分类号： B60C11/0327 ,  B60C11/0302 ,  B60C11/0304 ,  B60C11/032 ,  B60C2011/0339 ,  B60C2011/0381 ,  B60C2200/10

    摘要： Provided is a pneumatic motorcycle tire in which both economic efficiency and stability are attained. Provided is a pneumatic motorcycle tire which includes a tread portion 1, and side wall portions 2 and bead portions 3, and whose rotation direction when the tire is mounted on a vehicle is designated. A tire tread includes a branched main groove 10 composed of a first groove 11 extending inclined toward the designated tire rotation direction on one side in the tire width direction, a second groove 12 extending from an end portion of the first groove in the reverse rotation direction of the designated tire rotation direction inclined toward the designated tire rotation direction on the other end in the tire width direction, and a third groove 13 extending from an end portion of the first groove and second groove in the reverse rotation direction of the designated tire rotation direction toward the reverse rotation direction of the designated tire rotation direction, wherein a connecting portion 10A of the first groove and the second groove is formed in a curved shape, the first groove and the second groove are formed in a curved line having the center of the radius of curvature on the side of the reverse rotation direction of the designated tire rotation direction, and the third groove is formed in a curved line having the center of the radius of curvature on the side of the tire center portion.